transudative การใช้

• Pleural effusions are classified as exudative ( high protein ) or transudative ( low protein ).
• Transudative pleural effusions occur in congestive heart failure ( CHF ), cirrhosis or nephrotic syndrome.
• The fluid is transudative in nature which facilitates continuous exchange of oxygen, carbon dioxide and metabolites between blood and synovial fluid.
• Therefore, if a patient identified by Light's criteria as having an exudative pleural effusion appears clinically to have a condition that usually produces transudative effusions, additional testing is needed.
• This means that although Light's criteria are relatively accurate, twenty percent of patients that are identified by Light's criteria as having exudative pleural effusions actually have transudative pleural effusions.
• Transudative pleural effusions are defined as effusions that are caused by " systemic " factors that alter the pleural equilibrium, or left ventricular failure, kidney failure, liver failure, and cirrhosis.
• If the difference between the albumin level in the blood and the pleural fluid is greater than 1.2 g / dL ( 12 g / L ), this suggests that the patient has a transudative pleural effusion.